package com.sky.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import com.sky.vo.EmployeeVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl extends ServiceImpl<EmployeeMapper, Employee> implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */

    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端传过来的明文密码进行MD5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employee
     * @return
     */
    @Override
    public boolean saveEntity(Employee employee) {
        System.out.println("当前线程的id=" + Thread.currentThread().getId());
        // 设置账号的状态,默认正常状态 1 表示正常 0 表示锁定
        employee.setStatus(StatusConstant.ENABLE);

        // 设置账号的密码,默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        // 设置当前记录的创建时间和修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        // 设置当前记录创建人id和修改人id
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        // 判断传入的参数是否为空
        isBlank(employee, "员工参数");
        // 判断员工用户名是否为空
        isBlank(employee.getUsername(), "员工用户名");
        // 判断员工的用户名与数据库的用户名是否重复
        QueryWrapper<Employee> wrapper = new QueryWrapper<>();
        wrapper.eq("username", employee.getUsername());
        Long count = baseMapper.selectCount(wrapper);
        if (count > 0) {
            throw new RuntimeException("用户名重复");
        }
        return this.save(employee);
    }

    /**
     * 修改员工
     *
     * @param employeeDTO
     * @return
     */
    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.updateEmployee(employee);
    }

    /**
     * 修改员工
     *
     * @param employee
     * @return
     */
//    @Override
//    public boolean edit(Employee employee) {
//        // 判断传入的id是否为空
//        isBlank(employee.getId(), "id");
//        // 判断传入的参数是否为空
//        isBlank(employee, "员工参数");
//        // 判断员工用户名是否为空
//        isBlank(employee.getUsername(), "员工用户名");
//        // 判断员工用户名是否和数据库的重复
//        QueryWrapper<Employee> wrapper = new QueryWrapper<>();
//        wrapper.eq("username", employee.getUsername());
//        Employee employeeOne = baseMapper.selectOne(wrapper);
//        if (!StringUtils.isEmpty(employeeOne)) {
//            if (!employeeOne.getId().equals(employee.getId())) {
//                throw new RuntimeException("员工用户名重复");
//            }
//        }
//        return this.updateById(employee);
//    }

    /**
     * 员工分页查询
     *
     * @param pageQuery
     * @return
     */
    @Override
    public IPage<EmployeeVo> pageQuery(EmployeePageQueryDTO pageQuery) {
        // 开始分页查询
        Page page = new Page();
        page.setCurrent(pageQuery.getPage());
        page.setSize(pageQuery.getPageSize());
        return baseMapper.select(page, pageQuery);
    }

    /**
     * 启用或禁用员工账号
     *
     * @param status
     * @param id
     * @return
     */
    @Override
    public void startOrStop(Integer status, Long id) {
//        Employee employee = new Employee();
//        employee.setStatus(status);
//        employee.setId(id);
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.startOrStop(employee);
    }

    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        // 判断员工id是否为空
        isBlank(id,"id");
        Employee employee = employeeMapper.selectById(id);
        employee.setPassword("****");
        return employee;
    }

    /**
     * 判空校验
     *
     * @param data
     * @param msg
     */
    public static void isBlank(Object data, String msg) {
        if (StringUtils.isEmpty(data)) {
            throw new RuntimeException(msg + "为空");
        }
    }

}
